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9. Two kg of water is converted into steam by boiling at atmospheric pressure. The volume changes from

2×10-3 m3 to 3.34 m3. The work done by the system is about

(a)  – 340 kJ                             (b)  – 170 kJ

(c)   170 kJ                                (d)  340 kJ

Answer-d

(4)

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